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HVAC Certification Practice Tests Exam Q&A
HVAC Certification Practice Tests Exam Q&A Propane and Butane are _______ than air: - CORRECT ANSWER-Heavier What will be the resistance in the circuit if the supply voltage is 30V and current flowing through the circuit is 5A - CORRECT ANSWER-6 ohms Temperature at which oil starts to produce a waxy substance that may interfere with the refrigeration system - CORRECT ANSWER-Floc point What manifold gauge set is used to charge, evacuate, add oil and recover refrigerant from a refrigera...
- Exam (elaborations)
- • 2 pages •
HVAC Certification Practice Tests Exam Q&A Propane and Butane are _______ than air: - CORRECT ANSWER-Heavier What will be the resistance in the circuit if the supply voltage is 30V and current flowing through the circuit is 5A - CORRECT ANSWER-6 ohms Temperature at which oil starts to produce a waxy substance that may interfere with the refrigeration system - CORRECT ANSWER-Floc point What manifold gauge set is used to charge, evacuate, add oil and recover refrigerant from a refrigera...
559 Journeyman Mechanical Exam HVAC Complete Questions and Answers
559 Journeyman Mechanical Exam HVAC Complete Questions and Answers Which Type of air-conditoning system is most likely to leak refrigerant into a structure? Direct, Indirect, Evaporative or Split? - CORRECT ANSWER-Direct : 2015 IMC 1103.3.2 When mechanical equipment is located on a flat roof that is more than 30 inches above grade, how far from the roofs edge must the equipment be located before a guard rail is not needed? less than 6', 9', 4' or more than 10'? - CORRECT ANSWER-Mo...
- Exam (elaborations)
- • 4 pages •
559 Journeyman Mechanical Exam HVAC Complete Questions and Answers Which Type of air-conditoning system is most likely to leak refrigerant into a structure? Direct, Indirect, Evaporative or Split? - CORRECT ANSWER-Direct : 2015 IMC 1103.3.2 When mechanical equipment is located on a flat roof that is more than 30 inches above grade, how far from the roofs edge must the equipment be located before a guard rail is not needed? less than 6', 9', 4' or more than 10'? - CORRECT ANSWER-Mo...
HVAC CONTRACTOR EXAM Questions and Answers Latest Verified
HVAC CONTRACTOR EXAM Questions and Answers Latest Verified An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - CORRECT ANSWER-voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve - CORRECT ANSWER-thermostat...
- Exam (elaborations)
- • 15 pages •
HVAC CONTRACTOR EXAM Questions and Answers Latest Verified An instrument that measures potential differences between 2 points in an electrical circuit is called? A. potentiometer B. thermistor C. ohmeter D. voltmeter - CORRECT ANSWER-voltmeter This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and control superheat A. automatic expansion valve B. thermostatic expansion valve C. low side float D. schraeder valve - CORRECT ANSWER-thermostat...
HVAC Journeyman Final Prep Study Exam Questions and Answers
HVAC Journeyman Final Prep Study Exam Questions and Answers In wood structures, notches on the end of the joists shall not exceed ___________ the joist depth. A. one fourth B. 6% of C. 1/2 of D. 10% of - CORRECT ANSWER-A. one-fourth Underground inspection shall be made after trenches or ditches are excavated and bedded, piping installed, and ___________ backfill is put in place. When excavated soil contains rocks, broken concrete, frozen chunks, and other rubble that would damage...
- Exam (elaborations)
- • 15 pages •
HVAC Journeyman Final Prep Study Exam Questions and Answers In wood structures, notches on the end of the joists shall not exceed ___________ the joist depth. A. one fourth B. 6% of C. 1/2 of D. 10% of - CORRECT ANSWER-A. one-fourth Underground inspection shall be made after trenches or ditches are excavated and bedded, piping installed, and ___________ backfill is put in place. When excavated soil contains rocks, broken concrete, frozen chunks, and other rubble that would damage...
HVAC journeyman prep test Exam Guide 2024 Questions and Answers
HVAC journeyman prep test Exam Guide 2024 Questions and Answers A listed smoke damper designed to resist the passage of smoke shall be provided at each point in a duct or air transfer opening penetrates a: (A)smoke barrier wall (B)fire rated wall (C)interior wall (D)corridor wall - CORRECT ANSWER-Corridor wall (IMC 607.5.4) Flexible air duct may be what length? (A)10' (B)2' (C)14' (D)6' - CORRECT ANSWER14' (IMC 603.6.1.1) The maximum vertical distance between the front lower lip...
- Exam (elaborations)
- • 13 pages •
HVAC journeyman prep test Exam Guide 2024 Questions and Answers A listed smoke damper designed to resist the passage of smoke shall be provided at each point in a duct or air transfer opening penetrates a: (A)smoke barrier wall (B)fire rated wall (C)interior wall (D)corridor wall - CORRECT ANSWER-Corridor wall (IMC 607.5.4) Flexible air duct may be what length? (A)10' (B)2' (C)14' (D)6' - CORRECT ANSWER14' (IMC 603.6.1.1) The maximum vertical distance between the front lower lip...
HVAC Journeyman's Study Set Exam Final Questions and Answers
HVAC Journeyman's Study Set Exam Final Questions and Answers The maximum horizontal length of a single-wall connector shall be ____ percent of the height of the chimney or vent. - CORRECT ANSWER-75% Grease filters shall be installed at an angle of not less that ____ degrees from the horizontal and shall be equipped with a drip tray beneath the lower edge of the filters - CORRECT ANSWER-45 A device that will automatically shut off the fuel supply to a main burner or group of burners ...
- Exam (elaborations)
- • 24 pages •
HVAC Journeyman's Study Set Exam Final Questions and Answers The maximum horizontal length of a single-wall connector shall be ____ percent of the height of the chimney or vent. - CORRECT ANSWER-75% Grease filters shall be installed at an angle of not less that ____ degrees from the horizontal and shall be equipped with a drip tray beneath the lower edge of the filters - CORRECT ANSWER-45 A device that will automatically shut off the fuel supply to a main burner or group of burners ...
HVACR Journeyman Practice Exam with Answers A+ Graded
HVACR Journeyman Practice Exam with Answers A+ Graded In a (direct expansion) evaporator, liquid refrigerant must boil away as close to the end of the coil as possible in order to: - CORRECT ANSWER-Operate at High Efficiency. What is one of the main reasons that reciprocating compressors are not 100% efficient? - CORRECT ANSWER-Clearance Volume A dirty evaporator and return air filters subsequently causes low evaporator pressures which will cause - CORRECT ANSWER-High Compression Rati...
- Exam (elaborations)
- • 3 pages •
HVACR Journeyman Practice Exam with Answers A+ Graded In a (direct expansion) evaporator, liquid refrigerant must boil away as close to the end of the coil as possible in order to: - CORRECT ANSWER-Operate at High Efficiency. What is one of the main reasons that reciprocating compressors are not 100% efficient? - CORRECT ANSWER-Clearance Volume A dirty evaporator and return air filters subsequently causes low evaporator pressures which will cause - CORRECT ANSWER-High Compression Rati...
HVAC Journeyman Test Final Exam Questions with Answers Verified
HVAC Journeyman Test Final Exam Questions with Answers Verified Sensible Heat - CORRECT ANSWER-Heat that can be Measured Specific Heat - CORRECT ANSWER-The Amount of Heat Required to Raise 1 LB of a Substance 1*F Latent Heat - CORRECT ANSWER-Heat used to cause change of state. BTU - CORRECT ANSWER-amount of heat required to raise 1LB of water 1*F One Ton of Refrigeration - CORRECT ANSWER-2000 x 144 x 24,288,000 Btu/24hours, and 12,000 Btu/hr A Room Thermostat Should be Mounted - CORR...
- Exam (elaborations)
- • 2 pages •
HVAC Journeyman Test Final Exam Questions with Answers Verified Sensible Heat - CORRECT ANSWER-Heat that can be Measured Specific Heat - CORRECT ANSWER-The Amount of Heat Required to Raise 1 LB of a Substance 1*F Latent Heat - CORRECT ANSWER-Heat used to cause change of state. BTU - CORRECT ANSWER-amount of heat required to raise 1LB of water 1*F One Ton of Refrigeration - CORRECT ANSWER-2000 x 144 x 24,288,000 Btu/24hours, and 12,000 Btu/hr A Room Thermostat Should be Mounted - CORR...
Hvac Journeyman Exam with Correct Answers 100%
Hvac Journeyman Exam with Correct Answers 100% Defects on gas piping or fittings shall be _____.(A) repaired(B) replaced or repaired and retested(C) repaired by a certified welder(D) ignored, as the operating pressure is much less than the air test. - CORRECT ANSWER-B. Fitting shall be replaced or repaired and retested. UMC Section 1316.4.3 Every absorption refrigerating system supported from the ground shall rest on a concrete slab extending not less than _____ the adjoining ground ...
- Exam (elaborations)
- • 10 pages •
Hvac Journeyman Exam with Correct Answers 100% Defects on gas piping or fittings shall be _____.(A) repaired(B) replaced or repaired and retested(C) repaired by a certified welder(D) ignored, as the operating pressure is much less than the air test. - CORRECT ANSWER-B. Fitting shall be replaced or repaired and retested. UMC Section 1316.4.3 Every absorption refrigerating system supported from the ground shall rest on a concrete slab extending not less than _____ the adjoining ground ...
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